Improvement in nail-driving machines for shoe-making



s. HARRIS.

NAIL-DRIVING MACHINE FOR SHOEMAKING., `NMF/'0,085

Patented Nov.16, 1875-.

Izy'/ Wiwmmg; @n

UNITED STATES PATENT OFFICE. y A

SAMUEL SHEPHERD, AND R. P. HARRINGTON, OF SAME PLAGE.

IMPROVEMENT IN NAIL-DRIVING MACHINES FOR SHOE-MAKING.

Specification forming part of Letters Patent No.170,085, dated November16, 1875 application liled February 24, 1875.

To all whom it may concern:

Beit known that I, SAMUEL HARRIS, of the city of Boston, in the countyof Suffolk and State of Massachusetts, have invented certain new anduseful Improvements in Nail-Driving Machines; and I do hereby declarethat'the following is a full, clear, and exact description V of thesame, reference being had to the accompanying drawing, which forms partof this speciication, and in which- Figure l represents a verticallongitudinal section of a nail-driving machine constructed in accordancewith my invention 5 Fig. 2,' a horizontal section on the line was; Fig.3, a verticalrtransverse section on the line yry. Fig. 4 is a verticaltransverse section upon a llarger scale o f duplicate chutes, and aslotted guide or bed plate for conducting two different sizes of nailsto the die, through which they are driven into the work.

This invention, while more particularly designed for nailing soles onboots and shoes, is

. applicable to driving nails in the construction of b'oXes, and forvarious kinds of work.

The lnventlon consists in certain novel de vices, combinations, andpeculiar construe will suffice here, however, to describe the may chineas adapted to working two sizes of nails. A A are the hoppers orreceiving-chambers for the separate reception and distribution of twosizes of nails. These chambers are arranged on opposite sides of themachine, at the back end of it, and are provided with revolvingpickersup O O, armed with Apins or other projections, and which serve topick up the nails and deposit a certain number of them at a time overbridges b b onto the chutes, and to throw back the surplus nails intothe hoppers. The chutes D D, for passing the two sizes of nails to thefront of the machine, are each composed of parallel wires, bars, orrods, of which there are here shown three to each chutethat is, twolower wires and one upper one-arran ged at a suitable distance apart, sothat the heads of the nails rest on the two lower wires, while the upperwire serves to act as a guard to prevent the nails from being jerked upor out. The lower wires of each chute alone enter the chambers back ofthe bridges b, toreceive the nails, point dom toindependently vibrate bythe jar pro-r duced in the working of the machine may be preserved, thevibration of the'chute being important as regards effecting the feed ofthe nails, and the construction of the chutes of separated wires, or ofskeleton form, as described, importantly assisting to effect the result.

The front or delivery ends of the chutes D D are bent to approximateeach other, and arranged between such bent ends is an adjustablecut-off, G, which may be turned or set by hand to cut olf or stopdischarge from either or both of the chutes, accordingly as it isrequired to use the larger nails supplied by the one chute, or thesmaller nails supplied by the other chute, or to stop the supply fromboth chutes. H is a rotary die, arranged to occupy an upright positionin front of the chutes D D, on and through the main bed or table I ofthe machine. Said die may be `ro tated by gearing fg k z from a mainshaft, J, or by any other suitable means. Its direction of motion isindicated by arrow in Fig. 2. The upper surface of this die, whichpresents an extended or table-like top, is on a level, or thereaboutwith the bottom of the front ends of the chutes, and is slotted, as atm, from its exterior to the hollow center n of the die, to

form a feeder, as said die is rotated for taking the nails one at a timefrom the front of either chute D, and conveying the nail to the hollowcenter ofthe die, down which it drops or is forced by the driver K, thatreceives its upand-down motion by a cam, r, and spring s, or other-wise,to drive the nail into the work, which is suitably adjusted, fed, orheld below the bottom of the die for the purpose.

By thus combining the feeder of the nail from the chute or chutes withthe die a separate sliding block for conveying the nail to the die, andmuch complication generally, is avoided, as Well as greater compactnessand efficiency obtained for the machine.

This rotating die H, with its slot-ted portion or feeder m, may be usedin connection with a single chute only, if desired; but the same admitsof being used, as shown, in connection with duplicate chutes, fromeither one of which the different-sized nails carried by the chutes maybe taken in regular succession, or other- Wise.

' the latter, and so that the slotted portion or feeder m, as it'takesthe nail from the chute, draws it along said guide into the hollow ofAthe die.

I claim- 1. A rotary die slotted from its exterior to its center, toform a feeder for conveying the nail to the center of the die, down orin which the nail is deposited for subsequent operation on it by thedriver, essentially as specified.

2. The combination of the guide M with the slotted portion or feeder mof the rotating die H, substantially as described.

3. The combination, in a machine for pre senting or feeding and drivingdifferent-sized nails, of a combined rotary die and slotted feeder withone or more pairs 'of chutes, for conveying the nails to the die,essentially as specified.

4. The combination, with duplicate chutes D D, of a cut-off, G, adaptedto stop the delivery froln either or both of the chutes, substantiallyas specified.

5. A nail-feeding chute, composed of two lower and a singleupper elasticand independently-vibrating wires, rods, or bars, substantially asherein described.

6. The combination of one or more hoppers,

A, rotary pickers-up G,bridges b b, and chutes D D, substantially asherein described.

SAMUEL HARRIS. Witnesses:

HARVEY 0. TENNANT, MILES M. DoLAN.

